From a857a8805c08da30a8af1987faa7c76a9e7a6c69 Mon Sep 17 00:00:00 2001
From: Harry Jeffery <harry@exec64.co.uk>
Date: Sat, 2 Feb 2019 22:09:28 +0000
Subject: jpeg: Fix mmap error handler

---
 src/backend_libjpeg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/backend_libjpeg.c')

diff --git a/src/backend_libjpeg.c b/src/backend_libjpeg.c
index ae27df8..3fde6c2 100644
--- a/src/backend_libjpeg.c
+++ b/src/backend_libjpeg.c
@@ -120,7 +120,7 @@ static enum backend_result open_path(const char *path, struct imv_source **src)
   private.len = len;
 
   private.data = mmap(NULL, private.len, PROT_READ, MAP_PRIVATE, private.fd, 0);
-  if (!private.data) {
+  if (private.data == MAP_FAILED || !private.data) {
     close(private.fd);
     return BACKEND_BAD_PATH;
   }
-- 
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